Harry Fuecks blogging about an interesting survey of recurring problems in projects using dynamic languages (http://groups.yahoo.com/group/wdf-dom/message/4136&threaded=1):
At the other end of the scale there's developers who know a language well and
can't resist adding 'smart' features. That needs to be a golden rule of what
not to do with dynamic languages - don't extend the language (at least not
using the language itself).
He talks mainly about Javascript and PHP, but then points at a nasty bit
of cleverness using Python's shiny new decorator syntax (http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/325917).
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